This extension currently logs events for the following schemas. Please refer to the code for the most up to date version, but this list will give you an idea of the kind of events which are logged via WikimediaEvents.

This extension is being used on one or more Wikimedia projects. This probably means that the extension is stable and works well enough to be used by such high-traffic websites. Look for this extension's name in Wikimedia's CommonSettings.php and InitialiseSettings.php configuration files to see where it's installed. A full list of the extensions installed on a particular wiki can be seen on the wiki's Special:Version page.